I don't think there would be much disagreement that "save the princess" is lazy and overdone. But so is "zombie apocalypse" and "legendary hero" and "super marine who can save humanity" and "small time criminal working his way up the crime chain".
But the same way "save the princess" is contorted into sexism, I could contort "zombie apocalypse" as Christian bashing, "legendary hero" as racism and "small time criminal" as anti-capitalist. It's really just simplistic and lazy.
hmm...
only a rough and tough legendary hero space marine can save humanity, by concealing his marine nature, to work his way up the crime chain, forming and breaking alliances as he goes, on his quest to rescue his love-interest, a space princess, from the evil overlord crime-boss, who makes a business of bringing in criminals and heroes from across time and space to battle each other, and the hoards of the undead, in large-scale competitions and arena battles (involving melee, gunfire combat, racing combat, ...) watched from around the universe.
queue dramatic intro scene:
hero is coming home after a day doing marine stuff, only to find his love interest being abducted, him being stopped from rescuing her by a crowd of undead, as sparkly teleport effects slowly cause her to disappear, as she calls out the protagonists name, ... because the overlord saw her and was awestruck by her prettiness, ...
the overlord can be himself large and towering and overly masculine with an almost ape-like appearance and a large mustache and a massively over-sized cigar (around the of a normal person's arm), who takes everything over-serious and is uncompromising, and served by dim-witted yes-men wearing snazzy uniforms. maybe he also does lots of long range meetings and conferences over a giant TV / viewscreen, ...
maybe the hero can be aided along his quest via an insider, a mysterious black guy with psychic powers (and ninjitsu), an afro, and who talks in Jive ("hey, this cool cat know what be going on, man...").
maybe also a spunky sharp-witted teenage schoolgirl, with skills in one-liners and hacking (and can summon-up high-tech weaponry).
...
...
yep, totally original...